Post-hole digger.



L. MAGGS.

POST HOLE BIGGER.

APPLICATION FILED Agn. 15, 1918.

Patented Dec. 10, 1918.

2 SHEETS-SHEET l.

INVENTOR ATTORNEY L. MAGGS.

PQST HOLE BIGGER.

APPLI-QATIQN FILED APR. I5- 1918.

1,287,377. Patented Dec.10, 1918.

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INVENTOR ATTORNEY UNITED STAT Es PATENT OFFICE;

LEE MAGGS, or IDALIA, coronano.

- [To all whom it may lt(ra7'n;'

Be-it known that l, LEE .MAoe-s, a citizen of the United States. residing at Idalia, in "the county of Yuma and State of Colorado,

have. invented certain new and useful Imwith the. following detailed description ofa 'preferrml embodiment, taken in connection with accompanying d'ra,\\-'n1gs, wherem:-

' Figure 1 is a side elevation, partly broken away, of the front portion .of an automobile i ;n ith my improvements attached thereto;

Fig. 21s a top or plan view of the parts m r ier;

Fig. 3 is across sectionalview through I -my improvements only, taken along the line' *3-3 of Fig. 1; I,

Fig. 4 isa detail cross sectional view on the line 4-4 of Fig. 1, and i Fig. 5 is a detail vertical sectional view; taken through the coupling means between the feed screw and the auger rod.

' f Fig. 6 is a detail showingthe pinion to drive. the drill, and

Fig. 7 is a sectional view on line 7-7 of Fig. 6.

l 05 Referring specifically to the drawings, a

suitable supporting frame is first provided for the workingparts. To this end ,transverse bars (3 and 7 maybe detaehablysecured to the side beams h of the. automobile chassis.

' These bars serve as the: base upon which the remainder of the machine is built. A relatively wide. bearing 9 is fastened at 10 to the .bar (3 and a bearing 11 is fastened at'12 to the. bar 7 and has a horizontal. forwardly extending arm 13 fastened to the bearing 9 at 13. Another bearing is fastened at 14 to hearing 9' and has a horizontal portion -15. I

and 'a. vertical portion 16. ln the vertical arm of bearing 11 and portion 16. a shaft 17 is fastened. on which. intermediate the bearing 11- and portion '16-. a. gear wheel 18 is keyed; 'llns gear wheel 18 meshes with a small gear wheel .or pinion 19. keyed to a' shaft 20, journaled in the vertical arm of hearing 11. Shaft 20 is to be detachably connected in any suitable manner to the keeps these gear wheels in mesh.

ing through holes 19 and arm 19. A spline 20 extends from the POST-HOLE BIGGER.

Specification of'Letters Patent. Patented Dec. 10,1918. Application filed April 15, 1918. Serial No. 228,663.

crank shaft 21 of the automobile engine. As one means of connection, i suggest that the shaft 20 have 'a socket 21', with a pin 22 extending inwardly therefrom so as to extend into a diagonal slot 23 in the crank shaft. ()n shaft 20, a drum 24 is fixed over which -a belt'or cable may be passed and pulled to frictionally grip its periphery and give it an initial impulse'to start the engine.

Pinion 19 is preferably mounted to slide longitudinally on the shaft 20 in order to disengage gear'wheel 18- when the drill is inactive; A spring 19 bears against pinion 19 and a pin 19 on shaft 20 and normally An arm 19 extends from arm. pivotedthereon having a yoke 19* engaging a' flange 19 on a reduced collar 19 of pinion 19, to slide the pinion against the tension of spring 19.- ".lh'e'lever may be secured in the shifted position by means of a pin 15) passand 19' in the lever shaft 20 into a; slot inthe pinion 19 so the pinion will-not turn independently of the shaft.

Intermediate the arms 13 and 15. a gear wheel 25 is'disposed. having teeth to mesh with teeth 26 extending laterally from the gear wheel 18. In lieu of the teeth 26 and gear wheel I may employ bevel gear wheels. if desired. through the. gear wheel 25, bars 13 and 1 an upstanding bearing 27 and a depending bearin 28 of the arm 13 is a rod 29 extend ing rigidly from an anger 30, which digs the post hole or excavates for other purposes. This auger n'n lyghave a plate 31 pivot-ed thereto at 32 as to fold against the base of the auger groove when boring and so as to fall outwardly when the-auger is raised to form in effect a closure for the groove to prevent the return of bored earth to the hole.

Bearing 9 extends above the arm 13 at a portion 33 and then imvardly to form a bearing having spaced plates 34 and 35. Portion 33 is suitably braced against lateral st 'aiu and to this end substantially vertical rods 36 and 37 are fastened thereto at 38. These rods, at 39 are fastened to horizontal rods 40 andto the. beams 3. Rods 40 are suitably fastened to the axle ,41 of the automobile at 42.

A screw rod 43 plates 34 and 35 and at its lower end is suit- 11 and a lever 19 is- Slidable vertically" 11o passes loosely through ably secured to the rod 29 so as to depress the same but turn relatively thereto and independently thereof. Rods 29 and 43, therefore, by way of example, may have heads 44 seeFig. disposed in a box 45 covered by a removable plate 46 secured thereto by screws 47. Suitable bearing balls 48 may be placed at desired locations between the heads and the box and cover.

Bolts or rods 29 are removably fastened by nuts 29" to the arms 13 and 34 to rigidify the structure. These bolts pass through eye- ,.-lets 29 of the box 45.

.Said screw rod 43 is in threaded engagement with the bore of a bevel gear wheel 49 disposed intermediate plates 34 and 35. Meshing with this bevel gear wheel is a bevel gear wheel 50 fixed on a shaft 51, journaled in plate and provided with a wheel or n'ianipulating handle at 52.

WVhile rod 29 is free to slide through gear wheel 25, yet it cannot turn independently thereof. because as shownin Fig. 4, said rod is provided witha groove .53 into which a key or spline 54 of the gear wheel extends.

It will be realized that the machine is detachably secured to the automobile in a manner above'described. The pulley 24, being turned by a'rope or cable will start the engine, whereupon shaft 20 drives pinion 19, gear wheel 18, teeth 26, gear wheel 25 and rod 29.- As the rod 29 turns, the anger turns therewith and is depressed as occasion demands through manipulation of wheel 52 which through the medium of shaft 51 and bevel gear wheels 59 and 49 turns the screw rod 43 forcing it against I the rod 29.

As merely one preferred embodiment of the invention has been illustrated and described, it is to be borne in mind that changes in the details of construction may be made within its spirit and scope.

I claim 1 I 1. Id a drilling machine a bearing, a gear wheel mounted fromsaitl hearing, a drilling means driven from said. gear wheel, a shaft. i

journaled in said bearing, a gear wheelon said shaft in mesh with the first gear wheel, means to attach said shaft to an engine, and means operable to turn said shaft to start the engine.

In adrilling machine, a bearing having arms disposed at an angle to eachother, a

second bearing, said second bearing'bein'g Y spaced from the first bearing and having Yj arms substantially parallel w1th its arms,

" gearing mounted intermediate and by said arms, means to drive the gearing and drill ing means driven by the gearing.

spaced from the first bearingand having arms substantially parallel with. its arms,

gearing intermediate and mounted by said arms, a shaft j ournaled by one of said arms, a gear wheel on said "shaf' in -mesh with said gearing, 'means to connect 'said shaft to an engme', means to drive said shaft, and

drilling means operable by said gearing.

4. In a drilling p eans, a bearinghaving arms disposed at an angle to each other, a' second bearing, said second bearing being spaced from the first bearing and having arms substantially parallel with its arms,

gearing intermediate and mounted by said wheel mounted between and to two of said arms, a second gear wheel, the latter gear wheel meshing with the first gear wheel and being mounted between the other arms, a shaft journaled in the first bearing, means to attach said shaftto an engine, means operable to drive said shaft to start the engine, drilling means having a rod slidablc through but turnable with the second gear wheel, a third bearing, said third bearing being secured to the other of said bars and extending over said rod and having spaced plates, a turnable member disposed intermediate said plates, a rod in threaded engagement with said member resting on the first rod and turnable independently thereof, means to turn said member, brace means extending from the third bearing, and n.-cans to fasten the brace means to the axle of an automobile.

In testimony whereof I affix my signature ,in presence of two witnesses.

, LEE MAGGS.

'ltnesses FRANK HOLCOMB, En. RAMsInn.

. 60 3. In a drilling machine,'a bearing hav 'ing arms disposed at an angle to each other,

a second bearing, said second bearing being 

